In case you need to recalibrate (set the orientation of) the cube frequently, your cube may need a quick recalibration of the gyro (IMU) sensor inside of it.
Here's how you do it:
1. Click the Hamburger menu (your profile image), and go to the "Load Cube State"
2. Click "Advanced" (located in the top-right corner of the screen), and choose "Reset IMU"
3. Follow the simple instructions on the "Reset IMU" screen:
Place your cube on a flat surface, with the orange center facing up.
Make sure the Cube is static (not in any movement), and click the "Reset IMU"
*Note: it is normal (and expected) to have slow orientation drifts.